Stapling machine



G. A. EDE.

STAYPLING MACHINE.

APPLICATION HLED AUGJl, 1921.

1,41 1 ,007. Patented Mar. 28, 1922.

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, STAPLING MACHINE. APPLICATION FILED AUG-11,1921- Patented Mar. 28,1922.

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GEORGE A. EDE, or coniini i, ILLINOIS."

STAPLING MACHINE.

Specification of Letters Patent.

' aw ee. an. 28,11 .22;

Application filed August 11, NHL Seria1 No. 491,375 '7 i 7'0(db/271cm tinny concern: V l Be it known that I Gnoiaon A. Eon, a citizen of the United States of Americmand a resident oi" Cobden, in the county of Ihiion and State of Illinois, have invented certain new and useful Improvements in h tapling Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming-"a part of thisspecification.

This invention relates to improvements in stapling machines and particularly to the class of stapling inachines used for "'rornr ing and driving staples. in the manufacture of veneer baskets. I More specifically stated. an object isto produce a stapling machine which includes a means for positively returning the stapleioi'ining and driving members after each staple-forming and driving operation where-- bv the entire dependency tor the return of said staple-forming and driving members upon unreliable springs is avoided.

A inrtlmr object is to provide a n M1118 wherehvthe wearing parts oi the retracting ineansmay be renewed,without the necessitv oi" changing the larger and more expensive associated parts; I

I'Vith the foregoing and other objectsin view. the ilIJQIFiODICOIHPIiSQS the novelconstruction, combination and arrangement of parts hereinafter more specifically described and illustrated. in theiaccompanying drawings wherein is shown the preferred embodiment of the invention. f However, it is to he understood that the invention-comprehends changes; variations and modifications which come within the scope of: the claims hereunto appended. I Y I I is a plan or my improved stapling I'E'HiCl'llUe. I

Fig. II is a sectionon line.IIII of Fig. III with the'spriiig housing removed Fig. III is a longitudinalsection through the machine.

IV is a transverse section on line IV-IV of Fig. I, part of the form-post be i n broken away. I

Fig. V is an enlarged fragmentary section showing one o'ttlierollers for returning the the disk.

staple-forming and driving .members" after I the staple-formingand driving operation, together with its supporting plate-and a fragment-of one of the disk Fig. VI

is a framgentary section ofithe parts shown in Fig. V showing the manner of securing theroller supporting plates to VII is a perspect-i-ve vi'ew of the roller-supporting plate shown in Figs. V

and VI, showing the rollers and dowels secured thereto.

Fig. VIII is. :a horizontal section through the staple forming mechanism showing the slidable fingers togetherwith the-cams for operating same. I 3

Fig, IX isan inverted planof the mechanism shown in Fig. VIII. n Fig. 'X is an enlarged section showing the mechanism for. forming and driving the staples. i Y 1 Fig.,XI is a perspective view of one of the staple-forming fingers. I I

Fig. XII is a perspectivevlew of oneof the staple-cutting and driving devices.

..Fig. XIII is an enlarged detail'ot the 1 wire feeding mechanism." II

Fig. XIV is a perspective of one of the sli'des'by wh ch the" staple-form gfingei's are retracted after the staple-has been formed.

I Fig. XV is a section on line XV-XVoi' Fig. XII. v I

In the drawings 1 designates the frame of the machine uponthe rear portio'irof which are mounted bearing boxes 2 in which the mainshai 't 3 ismounted. I vided with a-crank 4 at each side ofwhich is a cam member 5 provided with cam faces 6 and 7 (Figs: I andII). 8' designates a reciprocating rod having itsrear end journaled to the crank 4 0i the (Fig. III) and having its forwardendre- This shaft is I main shaft 3 duced-into a stem 9 atthe end of whichis a nut-I0, that confines an expansionspring'11.. The stem 9 of the reciprocating rod 8 is loosely positionedin the leglQofa recipro eating carrier 13, which ridesupon guides 14 of the table 1' of the machine frame and'is confined by bars 15' (Figx IV). Theleg 12 ofthe carrier 13 is held normally projected in a rearward direction by the spring 11 on the stem 9. The carrier 13 is provided with a longitudinal slot 16 (Figs. II and III).

17 is apost" bearing a" washer 18 on its lower portlon and having its lower end extending through the longitudinal slot 16 in the carrier 13. The lowertermination of the post is threaded as seen at 19 (Figs. III and IV) and is adapted to receive anut 20 whereby said post 17 may be clamped at any point in the slot 16. The post 17 is adaptedto' support a basket-form 21, that is rotatably mounted thereon and adapted to.

receive the basket to be stapled and permit of;each0f its sides being moved into a position facing the-stapling mechanism.

' .22 designates standards mounted upon the 7 frame of the machine by which the staple 7 wire delivery and fed mechanism is sup ported. -The staple .wires A (Figs. III, VIII. and-X)- are arranged-"preferably on .reels (not shown) which may be supported by arms .23 extending from the rear portionof the'machine frame.

There are two of said arms andreels from each of which a wire is conducted to one of the guide tubes 24, mounted upon arms 25 supported by the standards 22. The wires on passing through said tubes are directed downwardly as seen in Fig. III. j j

. 26; designates a feed wheel shaft journaled in -the"standards 22 and bearing wirefeeding wheels 27, that are located beneath the exit ends of the. wire-guide tubes 24.

The feed wheels 27 are opposed by rollers 28 mounted upon rods 29, loosely positioned in standard arms 22. The feed wheel shaft is rotated through the. medium of a ratchet wheel 30 fixed thereto and a rocker arm 31,

that carries a spring-controlled pawl 32 for engagement with said ratchet wheel. The rocker arm 31 is looselymountedon the feed wheel shaft and is united to the main shaft 3 of the machine by a connecting rod'33 fitted to acrank disk 34 carried by said main shaft.

35 deslgnates a cross-bar extending transversely of the machine immediately beneath the delivery and feed mechanism and in' which are seated vertical wireguide tubes 36 into which the wires A enter as they are fed 7 downwardly from the feedwheels 27. The

guide tubes: 36 lead to vertical channels 37 extendingthroughthe cross bar35 (Figs. f III, VIII andIX). The cross bar '35 is mounted upon atable 38 (Fig. III), that is surmounted by outer guides 39. and a central portion .41 located in the rear of the cross 7 bar35' (Fig. II). 42 in a cap plate (Fig, I)

mounted on said guides and partition.

l- 43 designates staple-forming bars positioned on the table 38 between the guides 39 and the central portion 41 for reciprocation. eachbar 43 being .provided at its rear end with ail-upstanding portion 44 having a cam groove 45 (Figs. III and XII), the utility of which will be hereinafter pointed out. A pair of forming fingers 46 is rigidly secured to each forming bar 43 and the ends of these fingers are provided with wire cutting edges.

.47 designates driving bars positioned alongside of the staple forming bars '43 and provided with drive fingers 48 positioned intermediate of the. forming fingers 46, be-

tween which they operate, as seen most clearly in Figs. X and XII. The slide bars 43 and 47 are united to each other by tongue and groove connection, as illustrated in Fig. XV. 49 designates staple form fingers (Figs. VIII, IX and X) reciprocally positioned longitudinally of the cross bar 35 and adapted for movement across the channels 37 as seen in Fig. VIII. These fingers are normally projected across said channels by sarings 50 located at the rear of the fingers.

he form fingers 49 are provided with cams 51 having beveled faces 52 (Figs. VIII, IX

and XI).

53 designates retracting slides for with-.

drawing the'form fingers 49 against the action of the springs 50. These retracting slides are positionedagainst the guides 39. Each of the slides'53 (Figs. II, XII. and

XIV) is provided with a leg 54 that enters a notch 43' in thelforming bar 43.

55-designates a pair' of'disks which are mounted on the main shaft 3 of the machine and are preferably formed integral with the cam members 5, each of said disks being provided with a pairof apertures 56. Located on each of said disks adjacent to said apertures is a plate 57 (Figs. III, Vand VI and VII) which supports pins 58 on each of which is mounted roller 59, said rollers 59 being adapted to extend through the apertures 56 in the disk 55. Supported by each plate 57 is a pair of dowels60 adapted to extend into recesses in the disk A screw 62 (Figs. V and VI), adapted to pass through a. central opening 63 in the plate 57 and screw into the disk 55, secures said plate 57 in place. V

It will be apparent that in therevent of the rollers 59 becoming worn from continued use, the plate 57 and rollers59 may be removed by the removal of a single screw.

j 64 designates return bolts (Figs. I and III) slidably mounted in housings 65 forming parts of the cap plate42. These bolts 64 are located above/the staple-forming and driving bars and their rear ends project from said housings 65 toward the upstanding portions 44 of the staple forming bars Fach the staples.

ot'these return-bolts is backed by an expansion spring 66 that holds the bolt normally projected in a rearward direction to bear against the upstanding portions 44 as seen in Fig. III.

' G7 designates dies (Figs. I. II, III and X) mounted in uprights 68 on the carrier 13 in positions to place said dies directly in advance ot the channels 37 in the cross bar that when the parts of the stealing mechanism are moved, the dies and the forming fingers 46 and the driving-linger 48 will approach each other, as suggested by Fig. X.

In the practical use of this machine assuming that the stock from which the basket is to be produced has been placed over the l aslzet form 21 (Figs. I and III) in. a folded condition. so that the rim of the basket will lie the rear of the dies 67 when the form is rotated on its post. The main shaft 3 is then set in motion and the first action th ireol 'is to move the rod 8 in a rearward direction from the position in which it is seen in Fig. III. On the movement of said red, the carrier 13 is moved rearwardly toward the cross bar Continued rotation of the main shaft carries the cam members 5 in the direction of the arrow in Fig. III. The cam face 6 of each cam member '5 comes into contact with the rear end of a forming bar ls-l, moving the fingers 476 of saidbars into the channels 37 ot the cross-bar 35, and the forward cutting edges of said fingers act to sever sections of the stapling-wire A which projects downwardly into said chan nels in the rear otthe form-fingers 49 which are normally projected across said channels.

Continued movement of the forming fingers 4.6 results in the formation of a staple, which is produced on the form bar 49 between the forming 46 as seen in Fig. As soon as the staples have been produced tie movement of the forming slide bars results in the retracting slides 53 engaging the bev eled Faces 52 of the cams 51 on the form fingers 49. When the retracting slides engage said cams 51 the form-lingo 49 are retracted out oi the channels 371 thereby moving them to positions entirely beyond The driver fingers 418 Fig. K.) of the driven bars 47 then carried torward under the action of the cains 7 and said driver lingers 48 push the previously formed staples forwardly from their positions between the forming fingers 4:6 and force them through the basket on the basket iorm 21 and their ends are clenched by conting in contact with the dies 67. which were previously moved rearwardly to the posh tion shown in Fig. X. v

coinpleterotation oi the main sh aft will term and drive a-pair of staples. and will. return the basket form 21 to its forward position. and because 01" the spring-pressed re turn bolts e4 exerting a rearward pressure against the upstanding portions 44 oi the staple-forming bars 43 (Fig. III) said staple-forming bars 4% will be forced against the cam members 5, and as the extended portions of said cam members rotate away from'the rear ends of said staple forming bars these bars will be moved rea'rwardlyby tie action of said spring-pressed bolts Get.

a To insure thereturn movement of the staple-forming bars 43 even though the springs 66 should tail to function properly, I provide each of the staple-torming bars 43 with a cam groove 45 (Figs. III and XI) which is located adjacent to the rear end oi" said staple-forming bar. The disks 5:) are each provided, as has been explained, with aqpair otprojecting rollers Assuming now that the springs: 66 fail to function properly the rotating disks will-carry their projecting rollers around and said rollers will enter the cam slots 45 in the staple forming hars43 and because ot'the inclined faces 45' in said slots with which I said projectingrollers successively contact, said staple forming bars will be positively returned to their rearward positions.

The staple-forming bars 43 and the driver h'arsd? are arranged to move independently under the actuation oi the cams that strike them to movethem forward; but inasmuch as onlythe staple-forming bars are engaged by" the returnbolts 64 and the projecting rollers to move them rearwardly after they havevbeen actuated in a forward dlrection, it is necessary to provide connection beween the bars for the return of the driver bars. This connection I provide by the application of pins 69 to the forming bars.

whichproject into longitudinal slots in the driver-bars and which engage the driver-bars in said slots, as seen in Fig; III to unite said bars 4L3Iand 4-7, so. that they will travel together "on their return stroke. Under ordinary conditions the spring pressed bolts 64 (Figs. Iand III) will retain the staple-forming bars 43 in engagement withtherotary cams6, sothe springspressed bolts will ordinarily restore said bars/l3 a after the staple-forming operations, This is a desirable restoring means, for the springs I noiselessly perform their functions without causing destructive hammer blows in the restoringvmeans. However, actual I experience has shown that a crooked piece of wire, or an improperly formed staple will occasionally be caught in the.machine so as toretard the fingers 46 and 48, and in this eventthe spring-pressed bolts 64; will not restore the staple-forming and driving bars.

It is, therefore. an advantage, to combine with the yieldlng restormg means a po'sltlve restoring means whereby'the'forming and driving bars are positively restored'when the springs fail to perform their functions. This positive restoring means includes the rollers 59 which normally pass idly through the cam grooves 4:5 in the rear ends of bars 43 without transmitting motion to said bars 4:3, but when a restoring spring 66 fails to restore its bar 43, the rollers 59 associated with said bar will enter the cam groove and engage'itsinclined wall 45, so as to positively restore the bar 48. The slot and pin connection at 69 in Fig. III. will cause the staple-driving bar 4:? to return with the forming bar 43.

I claim:

l. A stapling machine comprising stapleforming mechanism, a staple-driving bar cooperating with said staple-forming mechanism, means whereby said staple-driving bar is moved to drive a staple, a spring tending to return said bar, and means whereby said staple-driving bar is positively returned after such staple-driving operation. 7.

2. A stapling machine comprising stapleforming mechanism including a staple-forming bar, a stapleclriving bar cooperating with said staple-forming bar, a revoluble shaft, a cam mounted on said revoluble shaft to engage said staple-forming and stapledriving bars to move same forward to form and drive a staple, a restoring spring tending to retain said bars in engagement with said cam, and retracting means mounted on said revoluble shaft adapted to return one of said bars after the staple-forming and driving operation.-

j 3. A stapling machine comprisingstaple forming mechanism, including a stapleforming bar, a staple-driving bar cooperating with said staple-forming bar, a revoluble shaft,a cam mounted on said revoluble shaft u adapted to engage said bars to move same forward to form and drive a staple, one of said bars having a cam face, and retracting means comprising a spring tending to restore said bars, a-rotary member mounted on said revoluble main shaft and a projection extending from" said rotary member, said projection being adapted to engage said in-' clined face to positively restore one of said bars. 7 'i j 4. A stapling machine comprising stapleformingmechanism including a staple-formingfbar, a staple-driving bar cooperating with; said staple-forming bar, said stapleforining bar being provided with a' cam groove, arevoluble shaft, a cam mounted on' saidreroluble shaft adapted, to engage said staple-forming;and staple-driving bars to move Same forward to form and drive a stapl e, retract1ng means comprising a (118K mounted on sa1d revoluble shaft, and a projeetion extending from said disk,'said projection ;being adapted to enter the cam groove in said staple-forming bar to return a rota ry' member mounted on said revoluble V shaft, and a pair of projections extending from said rotary member, said projections being adapted to successively enter the cam groove in said. staple-forming bar to return said staple-forming bar. 7

6. A stapling machine comprising stapleforming mechanism including a staple-forming bar, a staple-driving bar cooperating with said staple-forming bar, said stapleforming bar being provided with a cam groove, a revoluble main shaft, a cam mounted on, said revoluble main shaft adapted to engage said staple-forming bar and said staple driving bar to move same forward to form and drive a staple, retracting means comprising a disk mounted on said revoluble main shaft, plate secured to said disk, a projection extending from said plate, said projection being adapted to enter the, cam groove in, said staple forming bar to return said staple-forming bar to its rearward position.- 7

7. A stapling machine comprising stap e forming mechanism including a staple forming bar, a stapledrlving bar cooperatingiwith said stapie-formingbar, said staple forming bar being provided with a cam groove, a revoluble main shaft, a cam mounted on d renoluble main shaft adapted to engage said stapleforming bar and said staple driving bar to move same forwardto form and driyea staple, retracting means comprising a rotary member on said revoluble main shaft, said. rotary member being provided with an aperture, a plate carried by said rotary member, a projection on said plate, said projection beingfadapted to extend through the aperture insaid rotary member and to enter the cam groove in said staple-forming bar to returns-aid staple forming bar to its rearward position, and means whereby said staple-driving bar is moved rearwardly by said staple-forming bar. V

8. A stapling machine comprising stapleforming mechanism including a stapleforming bar, a staple-driving bar slidably connected to said staple-forming bar, said staple-forming bar being provided with a cam groove, a revoluble main shaft, a cam mounted on said revoluble main shaft adapted to engage said staplaforming bar and said staple-driving bar to move same for ward to form and drive a staple, retracting means comprising a disk mounted on said revoluble main shaft, said disk being provided with a pair of apertures, 11 plate located on said disk adjacent to tures, a pair of rollers mounted on said plate, said rollers being adapted to extend through the apertures in said disk and to successively enter the cam groove in said. staple-forming bar to return said stapleforining bar and said staple-driving bar to their rearward positions, dowels secured to said plate and adapted to extend into said disk, and a screw whereby said plate is attached to said disk.

9. A stapling machine comprising stapleforming mechanism including a stapleforming bar, a staple-driving bar cooperating with said staple-forming bar, driving means adapted to engage said staple-forming and said staple-driving bars whereby said staple-forming and said staple-driving bars are moved forward to form and drive a staple, retracting means comprising a rotary member adapted to return said staple forming bar and a spring cooperating with said rotary member whereby said stapleforming bar is returned to its rearward position and means whereby said staple-driv-.

ing bar is moved rearwardlyby said stapleforming bar after the staple-forming and driving operation.

l0. Astapling machine comprising staple forming mechanism including a stapleforming bar, a staple-driving bar cooperating with said staple-forming bar, said staple-forming bar being provided with a cam groove, a revoluble main shaft, a cam mounted on said main shaft adapted to engage said staple-forming bar and said staple driving'bar to move said bars forward to form and drive a staple, retracting means comprising a disk mounted on said revoluble main shaft, said disk being provided with a projection adapted to enter the cam groove in said staple forming bar, and an expansive coil spring adapted to exert a rearward pressure against said staple-forming bar, whereby said staple forming bar is returned to its rearward position and means whereby said staple-driving bar is moved rearwardly by said staple-forming'bar after the stapleforming and driving operation.

said a pen.

11. A stapling machine comprising stapleforming mechanism including a stap 1 forming bar, a staple-driving bar slidably connected to said staple-forming bar, said in said staple-forming bar, a spring housin an expansive coil within said spring housing, and a plunger against which said expansive coil spring bears, said plunger being adapted to bear against a portion of the staplerforming bar whereby said stapleforming bar is returned to its rearward position and means whereby said staple driving bar is moved rearwardly by said stapleforming bar after the staple-forming and driving operation.

12. A stapling machine comprising stapleforming mechanism including a stapleforming bar, a staple-driving bar slidably connected to said staple-forming bar, said staple-forming bar being provided with a cam groove, a revoluble main shaft, a cam mounted onsaid main shaft and having cam faces adapted to engage said staple-forming bar and staple-driving bar to move said bars forward to form and drive a staple, retracting means'comprising a disk mounted on said revoluble -main shaft and provided with a pair of apertures, a plate located on said disk adjacent to said apertures, said plate being provided with a pair of rollers extending through the apertures in said disk to successively enter said cam groove in said staple-forming bar, dowels-secured to said plate and extending into said disk, a spring housing, an expansive coil spring within said spring housing, and a plunger against which said expansive coil spring bears, said plunger being adapted to bear against a portion of said staple-forming bar whereby said staple-forming bar is returned to its rearward position and means comprising a slot and pin connection between said staple-forming and said staple-driving bars whereby said staple driving bar is returned to its rearward position.

In testimony. that I claim the foregoing I hereunto afiix my signature.

' GEORGE A. EDE. 

